Yeah,
I'm in the throws of building the Law Wooden Clock 1 from the
Home website. I use the Gear Generator from
woodengears.ca to create the gear profiles with the teeth spacing set at .38" and export as PLT files. Then I use CorelDRAW X3 as my CAD software, and import the *.plt gear profiles into CorelDRAW to customize the spokes into something more artistic, and then output all drawings as HPGL.PLT files to preserve the scale. Then import these plot files into LazyCAM to create the gcode.
Once loaded into LazyCAM, you must create an Outside offset for the gear teeth, then DELETE the actual gear teeth. And an Inside offset for the spokes, then DELETE the actual spokes. Make sure to turn Lead-ins OFF, and I use a 1/8" carbide router bit as the cutter. Use LazyCAM Autoclean function to set the proper cut order, so that all inside cuts are performed first, you want the gear teeth to be the last item cut.
At times, LazyCAM still gets the order wrong, so it is a good practise to load the file into Mach3, and Start the program running on the Toolpath screen (NOT connected to the CNC) and watch what it does first. If the cut order is wrong, simply go back into LazyCAM and rearrange until it's in the correct cut order.